Kent · England
Window Mastic in Great Stonar
Our applicators work in Great Stonar on mastic around window and door frames, sills and patio doors. Old sealant removed completely, joints prepared properly and every job guaranteed for a year.
- Draughts coming in around windows and doors
- White mastic on grey or black frames
- Rain getting in at the frame or under the sill
Window mastic in Great Stonar
Colour matters on a frame. We can seal in white, brown, anthracite grey, black or clear, so the bead blends with the window rather than framing it. We work on composite doors, window sills and aluminium frames, and the jobs we see most are old mastic that has gone black or come away and sealant in the wrong colour for the frame.
In a village or hamlet like Great Stonar, older cottages and farmhouses often have timber windows set in stone or brick. Not every older frame suits a modern silicone bead, so the sealant has to be chosen to suit the building.
Big or small, it’s backed by our one-year guarantee in Great Stonar and across Kent.
- Place
- Great Stonar (CT13)
- Wider area
- Kent
- Cover
- A year, on every job
- Quotes
- Quoted before any work starts
- Call
- 0345 464 0079
- Updated
- 26 October 2026
How the visit works
Most of a good job is in the preparation, so that is where we spend the time. Every joint is cleaned and dried before new material goes in. All told, the work takes a few hours for a handful of frames, longer for a whole house. In a small place like Great Stonar, access is normally the main thing to plan. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- We check each frame and agree which ones need doing.
- The old mastic is cut out and the surfaces cleaned back.
- Deep gaps are filled with backing rod to set the depth.
- We apply a weatherproof sealant to match the frame and tool it neatly.
- Finally we tidy up and check each joint.
Preparing for the visit
- Let us know about earlier repairs to the joints
- Mention any tricky access
- Mention any leaks or damp you’ve noticed
Ask for a quote
We quote each job on its own, so the first step is telling us about yours. Just ring 0345 464 0079 or drop us an email with the details, and pictures are welcome.
Related advice
FAQs for Great Stonar
I let a flat near Sandwich station. Can you help?
Yes, landlords and agents are among the people we work for. You can phone 0345 464 0079 or send us an email with the details for a clear quote.
Does living near the coast affect window mastic in Great Stonar?
Near the sea, outside joints face more wind, rain and salt than they would inland, so preparation and the right sealant matter all the more. It’s worth checking the walls that face the sea first.
Is it OK to seal over old sealant?
No. Fresh sealant does not stick to old sealant, and anything trapped underneath, including mould and water, stays there. We remove it all first.
When is the sealant fully cured?
That depends on the sealant used, so please follow the time we give you when we finish.
Do I need to be at home?
Access is agreed with you when the job is booked. For inside work, that normally means someone being in.
Do you hold any approvals?
Yes. We’re an ARBOMaster approved applicator, which is run for the Arbo sealant brand.
Do you have sealant for grey or black windows?
Yes. White, brown, anthracite grey, black and clear sealants are all available, so the joint suits the frame.
Do you cover Great Stonar?
Yes. We cover Great Stonar and the rest of Kent. To book, call 0345 464 0079 or send us an email.
Different surfaces, different methods
Aluminium frames
Aluminium needs a sealant that bonds to coated metal and we avoid acetoxy silicones, which can react with some metals. We use a neutral-cure product.
Timber windows & doors
On period timber windows, traditional sand mastic is sometimes the better choice. We will tell you which suits your home.
Landlord and commercial work in Great Stonar
Housing providers, facilities teams and property managers book us too. Several sites can go on one quote, and we are fully insured for the work.
Water getting past a failed joint can damage the building, which is a bigger problem in a rented property. Resealing at the right time is simple maintenance.
How to look after the new joints
Once the sealant has cured, a few habits help it last:
- Don’t aim a pressure washer at the joints
- Walk round the house once a year and look at the joints
- Clear any debris from frame drain holes
- Ventilate rooms so frames don’t stay wet inside
Most silicone sealants will not take paint, so mention any painting plans before we start. We can use a paintable sealant where that matters.
Water gets in quietly when mastic fails. Often the first sign is a damp patch inside or flaking paint on the reveal. Early resealing stops it reaching that point.
What happens if it’s left?
The work is quick compared with the damage it prevents: the visit takes a few hours for a few frames, or a day or more for a whole house. Leave it until water is coming in and you may need plastering and decorating as well. In a small place like Great Stonar, homes can be exposed to wind and rain, which finds any gap, and damp in older walls is slow to dry out.
No two jobs are quite the same, so we quote each one individually. Size, access and the product the joint needs all play a part.
Why us?
- ARBOMaster approved applicator
- Fully insured
- More than 20 years in sealant work
- We leave the area clean and tidy
Take a look at our cost guide and our reviews.
Great Stonar homes and the weather
Great Stonar is within about 2 miles of the coast, where wind-driven rain is a fact of life and, nearer the shore, so is salt air. That is hard on the mastic around window and door frames, especially on the side facing the sea. London and the South East are among the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
Managing a site like Sandwich Infant School? Then its window and door frames need their mastic kept sound, just like a home’s. Rented homes near Sandwich station change hands often, and sound mastic around windows and doors keeps out the draughts and damp that tenants notice first. Homes close to St Mary's Church include some older properties, and the windows may be timber, sash or later replacements, and each needs the right sealant against the wall.
Great Stonar is about 5 miles south-west of Ramsgate, in Kent. Great Stonar gets the same service as everywhere we cover: the old material taken out, joints prepared properly and a 12-month guarantee. Great Stonar is one of 922 towns and villages in Kent we cover. We also work in Chelmsford, around 48 miles away.
Every address in CT13 is within our area for window mastic, from the main roads to the quietest streets. Streets in the area include Kitchener Drive, Spitfire Way and Hugin Lane, all of which we cover. Nearby, we also carry out window mastic in Sandwich (1 mile south), Cooper Street (2 miles west), East Street (2 miles west), Marshborough (2 miles south-west) and Woodnesborough (2 miles south-west). Larger places within reach include Canterbury (11 miles west), Margate (7 miles north), Dover (10 miles south), Ramsgate (5 miles north-east), Broadstairs (6 miles north-east) and Whitstable (14 miles west).
Around Great Stonar
In Great Stonar, that means homes and buildings near Prince's Beachlands, Sir Roger Manwood's School and Invicta House Ye Olde King's Arms. Great Stonar’s nearest station is Sandwich station, roughly 1.2 miles south. Nearby you’ll also find The Precinct Toy Collection (0.8 miles south) and Sandown Castle (4.3 miles south-east). The countryside around Great Stonar includes Monk's Wall nature reserve.
DIY sealant or a professional job?
A careful DIYer can reseal a simple joint, such as a straightforward joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
The difference is mostly in the preparation and the product. Joints are cleaned back to sound surfaces and dried, and the sealant is matched to the joint and its conditions, and the work is guaranteed for a year.
Towns and villages near Great Stonar
What else we do in Great Stonar
When it isn’t the sealant
To be straight with you, some problems need a different trade:
- Condensation trapped between the panes
- Worn gaskets, brush seals or a door that has dropped
- A sash or casement that will not close properly
Not sure which it is? You can call 0345 464 0079 or send us an email and we will tell you honestly.
Where we work in Great Stonar
- Patio & French doors
- uPVC windows
- Window sills
- Aluminium frames
- Timber windows & doors
- Composite doors